Has anyone successfully used iChat 4 with the OpenSSH dynamic proxy
mode? I've been attempting to use this to bypass a broken firewall
config and it appears to be broken in 10.5. I haven't done this
recently but it used to work in previous versions and all of the other
apps which I've tried

I know it's slightly poor form to point at your own site for
reference material, but there isn't much else out there at the moment
about the new(-ish looking) RTSP vulnerability in Quicktime 7.2 and
7.3 (at least) on Windows, complete with exploits.

Quoting F-Secure Security Labs' Security Response Manager, Runald, APC Magazine reports that "[It's] only a matter of time before malicious software targets the iPhone, which could trigger a wave of mobile malware - with made-for-Mac viruses, spyware and more all soon to follow."

"The bug in Apple Mail makes it possible for attackers to run malicious
code on a victim's machine by disguising an executable program as an
image or other type of innocuous file, said Juergen Schmidt,
editor-in-chief at Heise Security. A user can become infected simply by
clicking on an attachm